first divide it into 3 groups... 4 for each group...
& d+ p3 x5 H5 {+ S* fden use 2 groups to test... if the weight is same... den throw away these 2 groups.. if not... use another 1 group to test with tat 2 groups... throw away the same weight groups...公仔箱論壇" `6 N/ d H! ^# ?
den... left 4 balls...
1 p' ^/ L5 [6 d. @, X6 |1 R7 }公仔箱論壇when u use tat 3 groups to test... u oredi know it is heavier or not...
I6 n* c2 J# ], F2 etvb now,tvbnow,bttvbso when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
9 w+ u3 O! P# f% J! a+ Ntvb now,tvbnow,bttvbtake the heavier or lighter 1... throw away tat 2 normal ball...
/ {" T3 V5 s6 |% g3 ?2 cden u juz nit 2 test the last 2 balls...
2 C. K! F4 k9 ^/ ]; e1 c3 T: I. \same for now... take the heavier or lighter 1... |